## Physics MCQ on Equilibrium of Forces for NEET, JEE, Medical and Engineering Exam 2021

MCQ on Equilibrium of Forces: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations. In this post we are providing you MCQ on Equilibrium of Forces, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

## MCQ on Equilibrium of Forces

Q1. Consider the blocks shown in the diagram to be pushed against a frictionless table by a constant force. Following statements are said about the blocks:

All blocks move with the same acceleration
The net force on all the blocks is the same
Which of these statements is true?
a) Both A and B
b) Neither A and B
c) Only A
d) Only B

(c) Only A

Q2. In which direction should the force be applied to balance a force in the direction of North-East direction?
a) South
b) west
c) South-West
d) North-East

(c) South-West

Q3. The resultant of the two forces are perpendicular to the smaller of the two forces. The magnitude of one of the forces is double the magnitude of the other force. What is the angle between the forces?
a) 60°
b) 90°
c) 120°
d) 150°

(c) 120°

Q4. How is the weight of the aeroplane flying in the air balanced?
a) The weight is balanced because of the force due to the pressure difference between the upper and lower surfaces of the wings created by different airspeeds on the surfaces.b) The weight is balanced due to the vertical component of the thrust created by air currents striking the lower surface of the wings
c) The weight is balanced due to the force produced when the reactions of gases are ejected by the revolving propellor.
d) Upthrust of the air which will be equal to the weight of the air having the same volume as the plane

(a) The weight is balanced because of the force due to the pressure difference between the upper and lower surfaces of the wings created by different airspeeds on the surfaces.

Q5. Two forces with magnitude F have the resultant of same magnitude F. What is the angle between the forces?
a) 45°
b) 60°
c) 120°
d) 150°

(c)120°

Q6. Which of the following sets of concurrent forces are in equilibrium?
a) F1=3N,F2=5N,F3=1N
b) F1=3N,F2=5N,F3=6N
c) F1=3N,F2=5N,F3=9N
d) F1=3N,F2=5N,F3=15N

(b) F1=3N,F2=5N,F3=6N

Q7. Which of the following is true when a body is stationary?
a) The force acting on it is not in contact with it
b) The body is in vacuum
c) The body is in vacuum
d) The combination of forces acting on it balance each other

(d) The combination of forces acting on it balance each other

Q8. Among the following which cannot be a resultant force of 5 N and 10 N?
a) 4N
b) 5N
c) 8N
d) 12N

(a) 4N

Q9. What is the angle between the forces if two forces with equal magnitudes F act on a body and the magnitude of the resultant force is F/3?
a) cos−1 (17/18)
b) cos−1(2/3)
c) cos−1 (8/19)
d) cos−1(-1/3)

()cos−1(17/18)

Q10. Two blocks connected to each other by a string is hung to the ceiling by connecting another string to the upper block. When a force F is applied on the string, it produces an acceleration of 2 m/s2. If T and T’ are the tensions in two parts of the string, then which of the following is true?
a) T = 70.8 N and T’= 47.2 N
b) T = 70.8 N and T’= 0
c) T = 70.8 N and T’= 58.8
d) T = 58.8 N and T’= 47.2 N

(a) T = 70.8 N and T’= 47.2 N  